化学学报 ›› 1955, Vol. 21 ›› Issue (2): 122-131. 上一篇    下一篇

论文

键长、键的极性于键能间的关系

金松壽   

  1. 浙江师范学院化学系
  • 投稿日期:1954-10-28 发布日期:2013-06-04

THE RELATIONSHIP AMONG BOND LENGTH,POLARITY AND BOND ENERGY

CHIN SUNG-SHOU(S. S. CHIN)   

  1. Department of Chemistry, Chehiang Normal College, Hangzhou
  • Received:1954-10-28 Published:2013-06-04

作者認為單價鍵的鍵能主要決定於鍵長及鍵的極性,並假定此二因素對鍵能各有獨立的影響,從而獲得如下的經驗關係式:D=ab/r~(1.66)+23.06(xA-xB)~2或1/2(DA-A+DB-B)=ab/rAB~1.66其中xA,xB為成鍵二原子的元素電負性;a舆b為常數,其數值如下:a(或b)=8.03(N,O,F,H的常數)a(或b)=13.40(其他元素的常數)a(或b)=4.63+4.7rA(氫化物中H的常數,rA為化合原子的共價半徑)利用此三常數,曾計算83種單價鍵的鍵能。與實驗值比較,極大多數鍵的平均差異均在實驗誤差±(1-2)千卡以內。

On the assumption that the bond length and bond polarity contribute to bond energy (bond A-B) independently, an empirical relationship among them has been found as follows.